Vaporizing-type liquid fuel burner



Dec. l2, 1950 P. FOURNIER 2,533,783

VAPORIZING-TYPE LIQUID FUEL BURNER Filed June 25, 1947 f5? i Q F 7o $2 5a @a @y eo 6 T" l l 68 62 :H20 bo', 1 64 64 v'.' o

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ATTOENEYS Patented Dec. 12, 1956 ,UNITED STATES PATENT 1 .OFFICE e A i j 2.53m H f vAPoRIzING-TYPE LIQUIDFUIJLz BURNER.

Peter FournienTrenton, Mich, y r l r Appliemmn June z5, 1947, vSernin.5151;,8'1157 e es claims. (Cl. 1584-91)l i This vinvention relates to an oil burning furnace of the type equipped with vaporizin'gpottype burner.

` 'r An object of the invention is to provide la heating apparatus of improved design and simplified construction, economical and dependable in opdrawing, in which:

Figure 1 is a view in side elevation, with parts broken away, of an apparatus embodying the invention; and

Figure 2 is an axonometric view in section of the burner proper.

It is to be understood that thev invention is not limited in its application to the details of construction and arrangement Ioi.' parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.

The apparatus shown in Figure 1 comprises a casing or bonnet comprising a forward wall I2, side walls I3, a rear wall I4, and a lower wall or oor I6. 'I'he upper wall of the casing is formed by a register I8, of usual construction, and having overlapping edges 20 which rest upon the floor 22 of the building, so that the heater depends therefrom into the basement or other space below the licor.

Within the casing is mounted a stove 24, of rectangular cross section, and connected by means of a conduit 26 to a heat exchanger 28, the heat exchanger being in turn connected to a vent 30 which leads to a stack or other'exit for flue gases. l

Cold air from the space being heated enters the casing through a portion `32 of the register I8, passing thence over one end of the heat exchanger 28, into a cold air chamber 34 formed by sheet meta-l walls 35. Thence the cold air passes through an opening 36 to the inlet of a blower 38, mounted beneath the chamber 34. The outlet of the blower discharges adjacent the stove 24, so that the air from the'blower flows around the stove and past the other end o! the heat exchanger 28, and thence upwardly through the register I8.

Within the stove 24 is mounted a burnercasit is maintained in the burner'.

be formed of cast iron or the like, and which includes lateral walls 5I and a horizontal door 53, having a sump 54 formed as a depressed portion therein. The sump comprises acentral well 41 which receives ,the liquid fuel from theconduit 48, and ltwo rend pans 49 which are formed as depressed portions of the door 53.

'I'he periphery of the floor 53 is preferably slightly raised as indicated at 55, being separated from the central portion of the floor by a shoulder 56. The combustion chamber of the burner is formed by a member 51 which comprises a horizontal plate 58 secured in an aperture in the upper wall of the 4.casing 4Il by means of machine screws 68, while bolts or machine screws 62 extend through 4the plate 58 and are secured in apertured ears 64 in the firepot 50,110 vthereby adjustably suspend the firepot from the plate 58.

Formed integral with the plate 58 are two depending vertical plates 66, and forward and rear walls 52. The end walls 52 are in air-tight relation to the floor 53, being fitted thereto or sealed l by means of a calking composition, as indicated at 61. The plates 66 are formed with a, plurality of spaced apertures or tuyres 68, designed to permit passage of combustion air from the exterior of the plates 66 to the interior thereof. In the plate 58, intermediate the burner plates 66, is formed van opening 10, for the escape of combustion gases.

- Each of the plates 66 is spaced from the porbustion of the fuel.' At low-lire the fuel level will be slightly lower than at high-fire, and the combustion air will be supplied at a lower pressure, as is known in the art.

In the operation of the apparatus, the blowers 42, and 38 are put intooperation, and the llame is ignited within th'e rebox in the known manner. Fuel flows through the conduits 44 and 48 to the well 41, its level being maintained approximately at the point indicated at u. Air from the combustion blower I! passes into the casing Il and thence over the edges of the walls I. thence downwardly and through the slots 12, passing across the surface of the fuel in the form of-flame. Combustion air is thus supplied in ample quantity to the burner at the particular location where carbon deposits tend to form. Combustion air also and simultaneously flows inwardly through the apertures 68 to support and complete the combustion of the fuel, thereby bringing about a more complete combustion than is usual in this type of burner. From the firepot, the'ue gases will pass through the opening l0, and thence through the 'conduit 28 and heat exchanger 28 to the vent 30. Meanwhile, cold air is drawn downwardly from the 'space being heated and through the cold air ychamber 3'4, and is forced by blower 38 into the main portion of the` casing l0, passing over the stove 24 and past the heat exchanger 28 and thence upwardly through the register I8. The air will be heated during its passage, both by the heat exchanger and by the stove itself.

Although the invention has been described with reference to a particular embodiment thereof, it may be embodied in other forms within the skill of artisans in this art, and is not limited except in accordance with the terms of the following claims.

I claim:

1. Heating apparatus comprising a burner including a receptacle for liquid fuel, means for maintaining the fuel in said receptacle at a preand to said slots.

2. A burner for liquid fuel comprising a fuel receptacle having a bottom member formed with a horizontal surface, a sump therein having means for admitting fuel to the receptacle, and a second horizontal surface surrounding the first named horizontal surface at a slightly higher' level, means for maintaining the static level of fuel above the level of the second horizontal surface, means forming two opposed horizontal slots for admission of combustion air at a level slightly below said static level, means for supplying such combustion air under pressure, and means forming a plurality of opposed air-admitting ports at levels above said static level.

3. The invention defined in claim 2, wherein the slot-forming means and the last mentioned means comprise a horizontal plate, means for suspending said receptacle from said plate, and al pair of opposed parallel air-admitting plates terminating adjacent one of said -horizontal sur-.

faces to form said slots.

4. A burner for liquid fuel comprising a member formed with a horizontal surface, a sump therein having means for admitting the fuel, means for maintaining thestatic level of fuel above the level of said horizontal surface and for retaining said fuel on said surface, a support member, a plurality of walls extending downwardly from said support member and terminating in lower edges at a level below said static level, a portion of said lower edges being spaced from said horizontal surface to form a slot for 4 admission of combustion air at a level slightly below said static level. means for supplying such combustion air under pressure, said walls being provided with a plurality of air-admitting ports above said static level.

5. A burner for liquid fuel comprising a member formed with a sump and a horizontal surface surrounding the sump. means for admitting fuel to the sump and for maintaining the static level thereof above said horizontal surface and for retaining said fuel on said surface, a support member above the sump, walls extending downwardly from the support member and terminating in lower edges below said static level. at least a portion of said lower edges being spaced from said horizontal surface to form a slot for admission of combustion air below said static level, means for supplying such combustion air under pressure, said walls being provided with ports for admission of combustion air above said static level.

6. A burner for liquid fuel comprising a firepot having a bottom member formed with a sump, a substantially horizontal surface surrounding the sump flush with the top thereof, a second substantially horizontal surface surrounding said frst named horizontal surface at a slightly higher level, a downwardly extending aperturcd plate having its lower edge spaced from said second horizontal surface to form a slot for admission of combustion air to the flrepot, means for maintaining fuel at a, static level slightly above said lower edge, and means for maintaining a differential of air pressures at opposite sides of said slot to cause combustion air to depress the fuel and pass beneath said lower edge.

7. A burner for liquid fuel comprising a firepot having a bottom member formed with two concentric horizontal surfaces at dierent levels, a sump in the lower of said surfaces, means for admitting fuel to said sump and maintaining the static level thereof above the level of the higher of said surfaces, means forming a horizontal slot for admitting combustion air at a level slightly below said last mentioned level, and means for supplying combustion air to said slot under pressure.

A8. A burner for liquid fuel comprising a firepot including a fuel receptacle, a sump therein having means for admitting fuel to the receptacle, means for maintaining fuel in the re-` PETER FoUnIER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 76,117 Post et al. Oct. 22, 1867 1,912,713 Kresky June 6, 1933 2,007,822 Young July 9, 1935 2,184,967 A Winter Dec. 26, 1939 2,391,585 Miller Dec. 25, 1945 

